Realists?? Climate alarmists or climate hysterics is a more apt description. It is established scientific theory that climate is and has always been changing. At any point in time, the real question is how to adapt to the changes reasonably likely to occur over the next few decades. The objective should be to adapt in the least disruptive and most cost effective ways. Many of losses we have now from weather events are due more to unwise patterns of human development than any actual change in the severity or frequency of events. So rather than hobble or decimate the industrial infrastructure that gives us the means to adapt, we should move to adapt to a higher sea level and an increase in temperature while also taking modest steps to reduce CO2 release. We can build back from hurricane alley coastlines, build on stilts with more wind-resistant roofs, put utilities on the second floor and not the basement, use flood insurance to discourage development near the shore, promote wetlands, build levees and sea walls (like Holland), increase the extent of sea borne civilization (like Venice). The extra CO2 can help our plant friends- maybe it can lead to increased crop yields.
The worst approach is to succumb to panic and pursue a reckless economically disruptive course of action. Instead we should be sensibly adapting to change over the course of a few decades. Really, the sky is not falling.